dmx512

I'm currently in the process of re-writing a program to process data received over a serial connection using the RDM protocol , each packet is received by a UART and has a specific structure but may vary in length, a packet structure example is below, assuming the number of bytes in the packet to be n (this may change depending on the contents of the packet) What I want to do is define a struct in my C code that has the various parameters defined, but to be able to read and write bytes to/from the struct from the UART as though the struct is just an array of uint8_t. My issue with this is that

Couple of quick questions. I have a DMX king USB lighting controller that I'm trying to control. It's based on the Open DMX protocol (from Entec) who make available a c# class. I've got the device plugged into an RGB can, and if I test the USB device with their driver, it connects to COM4 and when I switch their software into transmit mode, I can then set individual DMX channels. Using their OpenDMX class, with a few modifications (the core is the same, i've just added some extra error checking, I can locate the device, query it's information etc. When I open the device I get a handle. I can

I'm trying to communicate with the Enttec USB DMX Pro. Mainly receiving DMX. They released a Visual C++ version here , but I'm a little stumped on what to do to convert to Obj-c. Enttec writes, "Talk to the PRO using FTDI library for Mac, and refer to D2XX programming guide to open and talk to the device." Any example apps for Objective-C out there? Is there an easy way to communicate with the Enttec DMX USB Pro? Brad Larson I've done a significant amount of work with the FTDI chips on the Mac, so I can provide a little insight here. I've used the single-channel and dual-channel variants of